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Home » A charged particle having drift velocity of in an electric field of has a mobility in of : (1) (2) (3) (4)
A charged particle having drift velocity of 7.5 \times 10^{-4} m s ^{-1} in an electric field of 3 \times 10^{-10} Vm ^{-1} has a mobility in m ^{2} V ^{-1} s ^{-1} of :
(1) 2.5 \times 10^{-6}
(2) 2.25 \times 10^{-15}
(3) 2.25 \times 10^{15}
(4) 2.5 \times 10^{6}
Physics
A charged particle having drift velocity of 7.5 \times 10^{-4} m s ^{-1} in an electric field of 3 \times 10^{-10} Vm ^{-1} has a mobility in m ^{2} V ^{-1} s ^{-1} of :
(1) 2.5 \times 10^{-6}
(2) 2.25 \times 10^{-15}
(3) 2.25 \times 10^{15}
(4) 2.5 \times 10^{6}

Correct option: (4)

As we know that,

v _{ d }=\mu E \Rightarrow \mu=\frac{ V _{ d }}{ E }
Calculating, =\frac{7.5 \times 10^{-4}}{3 \times 10^{-10}}
\mu=2.5 \times 10^{6}
(\mu= mobility )

i

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